puirer upirer piurer ipurer uiprer iuprer purier uprier pruier rpuier urpier rupier piruer ipruer priuer rpiuer irpuer ripuer uirper iurper uriper ruiper iruper riuper puierr upierr piuerr ipuerr uiperr iuperr pueirr upeirr peuirr epuirr uepirr eupirr pieurr ipeurr peiurr epiurr iepurr eipurr uieprr iueprr ueiprr euiprr ieuprr eiuprr pureir upreir prueir rpueir urpeir rupeir puerir uperir peurir epurir ueprir euprir preuir rpeuir peruir epruir repuir erpuir urepir ruepir uerpir eurpir reupir erupir pireur ipreur prieur rpieur irpeur ripeur pierur iperur peirur epirur ieprur eiprur preiur rpeiur periur epriur repiur erpiur irepur riepur ierpur eirpur reipur eripur uirepr iurepr uriepr ruiepr iruepr riuepr uierpr iuerpr ueirpr euirpr ieurpr eiurpr ureipr rueipr ueripr euripr reuipr eruipr ireupr rieupr ierupr eirupr reiupr eriupr puirre upirre piurre ipurre uiprre iuprre purire uprire pruire rpuire urpire rupire pirure iprure priure rpiure irpure ripure uirpre iurpre uripre ruipre irupre riupre puirre upirre piurre ipurre uiprre iuprre purire uprire pruire rpuire urpire rupire pirure iprure priure rpiure irpure ripure uirpre iurpre uripre ruipre irupre riupre purrie uprrie prurie rpurie urprie ruprie purrie uprrie prurie rpurie urprie ruprie prruie rpruie prruie rpruie rrpuie rrpuie urrpie rurpie urrpie rurpie rrupie rrupie pirrue iprrue prirue rpirue irprue riprue pirrue iprrue prirue rpirue irprue riprue prriue rpriue prriue rpriue rrpiue rrpiue irrpue rirpue irrpue rirpue rripue rripue uirrpe iurrpe urirpe ruirpe irurpe riurpe uirrpe iurrpe urirpe ruirpe irurpe riurpe urripe ruripe urripe ruripe rruipe rruipe irrupe rirupe irrupe rirupe rriupe rriupe puierr upierr piuerr ipuerr uiperr iuperr pueirr upeirr peuirr epuirr uepirr eupirr pieurr ipeurr peiurr epiurr iepurr eipurr uieprr iueprr ueiprr euiprr ieuprr eiuprr puirer upirer piurer ipurer uiprer iuprer purier uprier pruier rpuier urpier rupier piruer ipruer priuer rpiuer irpuer ripuer uirper iurper uriper ruiper iruper riuper puerir uperir peurir epurir ueprir euprir pureir upreir prueir rpueir urpeir rupeir peruir epruir preuir rpeuir erpuir repuir uerpir eurpir urepir ruepir erupir reupir pierur iperur peirur epirur ieprur eiprur pireur ipreur prieur rpieur irpeur ripeur periur epriur preiur rpeiur erpiur repiur ierpur eirpur irepur riepur eripur reipur uierpr iuerpr ueirpr euirpr ieurpr eiurpr uirepr iurepr uriepr ruiepr iruepr riuepr ueripr euripr ureipr rueipr eruipr reuipr ierupr eirupr ireupr rieupr eriupr reiupr pureri upreri prueri rpueri urperi ruperi puerri uperri peurri epurri ueprri euprri preuri rpeuri peruri epruri repuri erpuri urepri ruepri uerpri eurpri reupri erupri purrei uprrei prurei rpurei urprei ruprei purrei uprrei prurei rpurei urprei ruprei prruei rpruei prruei rpruei rrpuei rrpuei urrpei rurpei urrpei rurpei rrupei rrupei puerri uperri peurri epurri ueprri euprri pureri upreri prueri rpueri urperi ruperi peruri epruri preuri rpeuri erpuri repuri uerpri eurpri urepri ruepri erupri reupri prerui rperui perrui eprrui reprui erprui prreui rpreui prreui rpreui rrpeui rrpeui perrui eprrui prerui rperui erprui reprui rerpui errpui rrepui rrepui errpui rerpui urerpi ruerpi uerrpi eurrpi reurpi erurpi urrepi rurepi urrepi rurepi rruepi rruepi uerrpi eurrpi urerpi ruerpi erurpi reurpi rerupi errupi rreupi rreupi errupi rerupi pireru ipreru prieru rpieru irperu riperu pierru iperru peirru epirru ieprru eiprru preiru rpeiru periru epriru repiru erpiru irepru riepru ierpru eirpru reipru eripru pirreu iprreu prireu rpireu irpreu ripreu pirreu iprreu prireu rpireu irpreu ripreu prrieu rprieu prrieu rprieu rrpieu rrpieu irrpeu rirpeu irrpeu rirpeu rripeu rripeu pierru iperru peirru epirru ieprru eiprru pireru ipreru prieru rpieru irperu riperu periru epriru preiru rpeiru erpiru repiru ierpru eirpru irepru riepru eripru reipru preriu rperiu perriu eprriu repriu erpriu prreiu rpreiu prreiu rpreiu rrpeiu rrpeiu perriu eprriu preriu rperiu erpriu repriu rerpiu errpiu rrepiu rrepiu errpiu rerpiu irerpu rierpu ierrpu eirrpu reirpu erirpu irrepu rirepu irrepu rirepu rriepu rriepu ierrpu eirrpu irerpu rierpu erirpu reirpu reripu erripu rreipu rreipu erripu reripu uirerp iurerp urierp ruierp iruerp riuerp uierrp iuerrp ueirrp euirrp ieurrp eiurrp ureirp rueirp uerirp eurirp reuirp eruirp ireurp rieurp ierurp eirurp reiurp eriurp uirrep iurrep urirep ruirep irurep riurep uirrep iurrep urirep ruirep irurep riurep urriep ruriep urriep ruriep rruiep rruiep irruep riruep irruep riruep rriuep rriuep uierrp iuerrp ueirrp euirrp ieurrp eiurrp uirerp iurerp urierp ruierp iruerp riuerp uerirp eurirp ureirp rueirp eruirp reuirp ierurp eirurp ireurp rieurp eriurp reiurp urerip ruerip uerrip eurrip reurip erurip urreip rureip urreip rureip rrueip rrueip uerrip eurrip urerip ruerip erurip reurip reruip erruip rreuip rreuip erruip reruip irerup rierup ierrup eirrup reirup erirup irreup rireup irreup rireup rrieup rrieup ierrup eirrup irerup rierup erirup reirup reriup erriup rreiup rreiup erriup reriup
Note: these 'words' (valid or invalid) are all the permutations of the word puirer. These words are obtained by scrambling the letters in puirer.